Music library management

Another set of predominantly bug fixes in this week's build...

I've improved the in progress screen so that when an album goes from in progress to asking you to confirm the album art it now updates live - there's no need to refresh the web page.

I made sure any long standing HTTP connections for looking up art are automatically aborted after a period - this allows all albums to be inspected and fixed more reliably.

I also made sure existing, incorrectly sized artwork already available in your collection is used and resized, rather than new art looked up.

The release is available, as ever, at http://www.blisshq.com/download.html and existing licences apply.